Which type of element can have varying charges? Halogens
Transition Metals
Alkali Metals
Noble Gasses

Apeak with a retention time of 407 s has a width at half-height (w1/2) of 7.6 s. a neighboring peak is eluted 17 s later with a w1/2 of 9.4 s. a compound that is known not to be retained was eluted in 2.5 s. the peaks are not baseline resolved. how many theoretical plates would be needed to achieve a resolution of 1.5?

The best solution for preventing harm to people and pets from severe hurricanes involves determining and warning residents about what

Draw the skeletal structures of two different molecules that are each made of 5 carbon atoms and 12 hydrogen atoms.